Itinerant Spin Dynamics in Structures of ... - Jacobs University

Chapter 3: WL/WAL Crossover and Spin Relaxation in Confined Systems 59
3.0
2.5
R[E]/DeQ 2 SO
2.0
1.5
1.0
0.5
0.0
2 1 0 1 2
0.3
0.2
(a)
K x
I[E]/DeQ 2 SO
0.1
0.0
0.1
0.2
0.3
2 1 0 1 2
(b)
K x
Figure 3.15: (a) Real and (b) imaginary parts of the spectrum of the 2D Cooperon with
Zeeman term of strength gµ B B/D e Q 2 SO
= 0.4. E B,2D,1 (black), E B,2D,2 (red dashed),
E B,2D,3 (green), E B,2D,4 (blue dashed). Dashed vertical lines are located at K x = ±1/ √ 2,
the wave vector where the triplet mode E T− and the singlet mode E S are crossing each
other (without loss of generality K y = 0).